package com.wenson.structural.bridge;

/**
 * @ClassName: Pen
 * @Author: luowangcheng
 * @Date: 2024/6/15 10:07
 * @Description:
 */
public abstract class Pen {
    protected Ruler ruler;

    public Pen(Ruler ruler) {
        this.ruler = ruler;
    }

    public abstract void draw();
}
